title: Usage of blood products in multiple-casualty incidents: the experience of a level I trauma center in Israel.
abstract: OBJECTIVE
  To predict how much blood will be needed based on the number of injured patients arriving after a multiple-casualty incident.
  
  
  METHODS
  A retrospective study evaluating data collected in 18 consecutive terrorist attacks in the city of Tel Aviv between January 1997 and February 2005.
  
  
  METHODS
  A large, urban trauma center.
  
  
  METHODS
  A total of 986 patients in 18 events.
  
  
  METHODS
  Number of packed red blood cell (PRBC) units transfused per patient.
  
  
  RESULTS
  A total of 332 U of PRBCs were transfused. Half of the PRBC units were administered as massive transfusions to 4.7% of the patients. The number of PRBC units transfused per patient index (PPI) was related to incident size (mean [SD], 0.70 [1.60] to 1.50 [1.60]). The most frequent major blood group transfused was type O (50%). Half of the units of PRBCs were supplied during the first 2 hours.
  
  
  CONCLUSIONS
  One unit of blood per evacuated victim is sufficient in a small multiple-casualty incident and 2 U is sufficient in a large multiple-casualty incident. Half of the PRBC units should be blood group O.
authors.affiliation: The Yitzhak Rabin Trauma Center, Division of Surgery B, Tel Aviv Sourasky Medical Center, 6 Weizman St, 64239 Israel. sofferdror@hotmail.com
authors.forename: Dror
authors.initials: D
authors.lastname: Soffer
authors.forename: Josef
authors.initials: J
authors.lastname: Klausner
authors.forename: Dan
authors.initials: D
authors.lastname: Bar-Zohar
authors.forename: Oded
authors.initials: O
authors.lastname: Szold
authors.forename: Carl I
authors.initials: CI
authors.lastname: Schulman
authors.forename: Pinchas
authors.initials: P
authors.lastname: Halpern
authors.forename: Avigail
authors.initials: A
authors.lastname: Shimonov
authors.forename: Mara
authors.initials: M
authors.lastname: Hareuveni
authors.forename: Ofira
authors.initials: O
authors.lastname: Ben-Tal
mesh_terms: D001771:Blood Banks / Q000458:organization & administration*; D001788:Blood Grouping and Crossmatching; D003422:Critical Care / Q000379:methods; D004189:Disaster Planning / Q000379:methods*; D017707:Erythrocyte Transfusion / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D015601:Injury Severity Score; D007557:Israel; D008297:Male; D009104:Multiple Trauma / Q000175:diagnosis / Q000401:mortality / Q000628:therapy*; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D012307:Risk Factors; D016019:Survival Analysis; D023481:Terrorism; D014193:Trauma Centers; D016896:Treatment Outcome; D014218:Triage; D014505:Urban Population